This unappealing stereotype is particularly unfortunate since most women have no choice but to remain in the workforce. About 41 percent of mothers are primary breadwinners and earn the majority of their family’s earnings. Another 23 percent of mothers are co-breadwinners, contributing at least a quarter of the family’s earnings.32 The number of women supporting families on their own is increasing quickly; between 1973 and 2006, the proportion of families headed by a single mother grew from one in ten to one in five.